Window sticking machine film cutting device

Abstract

The invention discloses a thin film cutting device of a window pasting machine. The thin film cutting device comprises an upper roller and a lower roller. The upper roller is provided with an upper cutter, and a cutter base is provided with a lower cutter. The thin film cutting device is characterized in that thin holes are formed in the surface of the upper roller, each row of thin hole is communicated with one corresponding transverse hole, a fixed upper air distributing plate is arranged on the lateral end face of the upper roller and provided with an upper positive-pressure cavity and an upper negative-pressure cavity, the upper positive-pressure cavity is formed in the position obtained after the upper cutter and the lower cutter are in contact and cut a thin film, and the upper negative-pressure cavity is formed in the position obtained before the upper cutter and the lower cutter are in contact and cut the thin film; at least two air holes are formed in the surface of the lower roller, each air hole is communicated with a corresponding transverse cavity, a fixed lower air distributing plate is arranged on the lateral end face of the lower roller and provided with a lower negative-pressure cavity, and the lower negative-pressure cavity is formed in the position close to the position away from the lower roller after the thin film is cut. The thin film cutting device has the advantages that the thin film can be reliably cut, the cut thin film can be accurately conveyed, and meanwhile the service life of the cutters is long.

Description

technical field [0001] The invention relates to a film sticking device for a window carton, in particular to a film cutting device of a window sticking machine. Background technique [0002] The window sticking machine is mainly used for window-opening cartons such as window-opening gift boxes, cosmetic boxes, tissue boxes, window-opening corrugated boxes and envelope bags. The function of the film cutting device of the window gluing machine is to cut the film roll into a film sheet suitable for pasting on the window opening of the carton. In order to increase the speed, most of the film cutting devices of the window gluing machine in the prior art adopt the rolling cutting method, but The existing disadvantages are also obvious: 1. The film cannot be reliably cut, and the cut film cannot be accurately conveyed before leaving the lower roller; 2. The upper and lower cutters are in flat to flat contact to cut the film, and the cutting force is large , The cutter wears a lot,...

AI Technical Summary

Problems solved by technology

The function of the film cutting device of the window gluing machine is to cut the film roll into a film sheet suitable for pasting on the window opening of the carton. In order to increase the speed, most of the film cutting devices of the window gluing machine in the prior art adopt the rolling cutting method, but The existing shortcomings are also obvious: 1. The film cannot be reliably cut, and the cut film cannot be accurately conveyed before leaving the lower roller; 2. The upper and lower cutters are flat to flat to cut the film, and the cutting force is large , the cutter wears a lot, and the cutter life is short

Images